1. Collect evidence: Collect as much evidence as possible, including book photos, author's name, publication date, etc. This evidence can help you determine the authenticity of this book and whether it infringes on your child's rights and interests.
2. Contact the author: You can contact the author of the book to find out why you use the child's name and photo. If you don't get your permission, you can ask to stop using your child's name and photos and ask to delete the published content.
3. Seek legal help: If the author is unwilling to cooperate, he can seek legal help. You can consult a lawyer to know your rights and feasible legal channels.